Synergistic quinclorac herbicidal compositions

ABSTRACT

A selective synergistic postemergent herbicide composition is provided for the control of undesired broadleaf vegetation and grassyweeds comprising the combination of quinclorac and a selective herbicidal protox inhibitor. About 0.05 part to about 0.1 part by weight of the protox inhibitor is provided for each part by weight of quinclorac. Better synergistic results are obtained from the combination of quinclorac, a selective herbicidal protox inhibitor, and a selective herbicidal auxinic agent. About 0.05 part to about 0.1 part by weight of the protox inhibitor is provided for each part by weight of quinclorac, and about 1 part to about 4 parts by weight of the auxinic herbicidal agent for each part by weight of quinclorac. The synergistic composition hereof has been found to provide more rapid and better control of grassy weeds such as crabgrass than presently registered herbicides.

FIELD OF THE INVENTION

The present invention relates to a selective synergistic postemergentherbicidal composition for the control of undesired vegetation whenapplied to the locus of the vegetation. Quinclorac,3,7-dichloro-8-quinolinecarboxylic acid (CAS 84087-014), certainprotoporphyrinogen oxidase inhibitors, herein referred to as “protoxinhibitors,” and a number of herbicidal auxinic agents have been usedindividually for selective control of noxious weeds and plants withoutsignificant damage to desirable grasses and the like. Heretofore, it hadnot been recognized that when quinclorac is combined with a protoxinhibitor or a protox inhibitor plus herbicidal auxinic compound incertain relative proportions, the combination exhibits an unexpectedsynergistic herbicidal effect providing more effective control ofdifficult to eradicate grassy weeds and undesirable broadleaf vegetationthan the individual herbicidal materials used alone at comparableapplication rates.

Protox inhibitors that exhibit herbicidal synergistic effects incombination with quinclorac include carfentrazone-ethyl (CAS128639-02-1), sulfentrazone (CAS 122836-35-5), and pyraflufen-ethyl,2-chloro-5-(4-chloro-5-difluoromethoxy-1-methylpyrazol-3-yl)-4-fluorophenoxyaceticacid ester (CAS 129630-17-7). Protox inhibitors has been found tosynergize the herbicidal effectiveness of a number of herbicidal auxinicagents including herbicidally active phenoxy, benzoic, pyridine,quinolinecarboxylic acid compounds, other than quinclorac, and amine andinorganic salts thereof.

BACKGROUND OF THE INVENTION

Herbicidal auxenic compounds have been used for many years to controlbroadleaf noxious weeds without damage to desirable grasses infestedwith the weeds. 2,4-D, 2,4-DP, 2,4-DB, MCPP, MCPA, MCPB, which areexemplary herbicidal auxinic compounds, have all been registered andlong used individually or in combination as herbicides for treating turfto control undesirable broadleaf vegetation without significantlyadversely affecting desirable grasses. Similarly, herbicidal protoxinhibitors such as carfentrazone-ethyl, sulfentrazone, andpyraflufen-ethyl have in recent years been used to control undesirablebroadleaf vegetation. Although auxinic and protox inhibitor compounds asdescribed have individually been found to be effective in broadleaf weedcontrol without significant damage to desirable grasses, these compoundshave not been known to be effective for control of grassy weeds, such ascrabgrass, goosegrass and dahlisgrass.

Thus, there continues to be a need for increasing the herbicidaleffectiveness of exemplary herbicidal protox inhibitors and herbicidalauxinic compounds, which have heretofore been used alone or incombination, and especially to provide a herbicidal composition thatwill not only control noxious broadleaf vegetation, but also beeffective against grassy weeds without adversely effecting desirablegrasses. The urgency of the need is exacerbated by increasinggovernmental oversight of the sale and approved use rate of herbicidalmaterials. The recommended level of herbicide that may be applied perunit of area is under pressure from governmental, as well as foreconomic and environmental reasons.

In addition, certain species of undesirable broad leaf vegetation andgrassy weeds are becoming more and more resistant to a number of themost widely used herbicides. Thus, on one hand ever more stringentconditions are being placed on the type and use rate of herbicides,while on the other hand accepted herbicides are becoming less and lesseffective over time in certain species of noxious weeds.

Furthermore, it is very expensive and time consuming to seek and obtainregistration of a new herbicidal compound, including its proposed userate. Approval data required must not only include evidence of efficacyat the application rates proposed but also the safety of the herbicidewhen applied at the recommended level.

Accordingly, demonstration of synergism by the combination of existingherbicidal agents, permits use of the individual components of thesynergistic combination at lower rates than when used alone, and in manyinstances ameliorates increasing resistance to herbicidal effectiveness.

Accordingly, there is a great need for improved broadleaf and grassyweed control compositions and a method of controlling such noxiousvegetation without adversely affecting desirable plants and whichreduces the amount of chemical herbicidal agent necessary to obtain theacceptable weed control.

BRIEF SUMMARY OF THE INVENTION

This invention relates to the discovery that when quinclorac, aherbicidal protox inhibitor and a herbicidal auxinic agent are combined,the resulting combination exhibits synergistic herbicidal effects, whichare equal to or better than the herbicidal efficacy of the individualherbicides, even though each of the constituents is present at a lowerconcentration than the required amount of each herbicide applied alone.

In particular, tests have shown that when quinclorac, a herbicidalprotox inhibitor and an auxinic herbicide agent are combined, and theresulting composition is applied at a recommended application rate forcontrol of undesired broadleaf vegetation and grassy weeds, ademonstrable synergistic effect is obtained. It has unexpectedly beenfound that when a protox inhibitor is combined with quinclorac, thecombination containing a lesser amount of quinclorac than recommended asa single herbicidal agent, not only exhibits more effective control ofbroadleaf weeds, but in addition this combination provides bettercontrol of grassyweeds than when quinclorac is applied alone, allwithout significant damage to desirable turf and grasses. Thissynergistic effect in controlling broadleaf noxious vegetation as wellas grassy weeds is enhanced even more by the addition of an auxiniccompound.

The selective synergistic postemergent herbicidal composition for thecontrol of undesired vegetation when applied at a recommendedapplication rate to the locus of undesired vegetation includes fromabout 0.1 to about 1 lb/acre of quinclorac and from about 0.005 to about0.06 lb/acre of a selective protox herbicidal inhibitor. Better resultsare obtained when the amount of quinclorac is supplied at a rate ofabout 0.18 to about 0.75 lb/acre and a sufficient amount of the protoxinhibitor is provided at a rate of about 0.01 to about 0.05 lb/acre.Best results are obtained when a sufficient amount of quinclorac isprovided to supply about 0.375 lb/acre of quinclorac.

Similarly, better results are obtained when the amount of the protoxinhibitor is sufficient to supply from about 0.01 to about 0.05 lb/acre,and best results are obtained when the protox inhibitor provided issufficient to supply from about 0.02 to about 0.03 lb/acre.

Synergistic results are preferably obtained by providing a sufficientamount of the active herbicidal ingredients to supply from about 0.1 toabout 1 lb/acre of quinclorac, from about 0.005 to about 0.06 lb/acre ofthe protox inhibitor and from about 0.15 to about 2 lbs/acre of theauxinic compound.

Improved synergism is obtained between the quinclorac, the protoxinhibitor and the auxinic herbicide agent when a sufficient amount ofthe active ingredients is provided to supply from about 0.18 to about0.75 lb/acre of quinclorac, from about 0.01 to about 0.05 lb/acre of theprotox inhibitor, and from about 0.25 to about 1.5 lbs/acre of theauxinic herbicide. Best synergistic results obtain by combiningsufficient quinclorac, protox inhibitor and auxinic herbicide when thecomposition contains an amount of the active ingredients to provideabout 0.375 lb/acre of the quinclorac, from about 0.02 to about 0.03lb/acre of the protox inhibitor, and about 0.75 lb/acre of the auxinicherbicide.

Exemplary protox inhibitors useful in the present invention includecarfentrazone-ethyl, sulfentrazone, pyraflufen-ethyl,flumiclorac-pentyl, flumioxazin, fluthiacet-methyl, aclonifen, bifenox,chlomitrophen, ethoxyfen, fluoroglycofen-ethyl, fomesafen, lactofen,oxyfluorfen, azafendin, cinidon-ethyl, oxadiargyl, oxadiazon,pentoxazone, flumipropyn, flupropacil, benzfendizone, nipyraclofen,fluazolate, thidiazimin or a compound having the structural formula

or combinations thereof.

The auxinic herbicidal agent may comprise one or more compounds selectedfrom the group consisting of herbicidally active phenoxy, benzoic,pyridine, quinolinecarboxylic acid compounds, other than quinclorac, andamine, esters and inorganic salts thereof. The salts are preferablyselected from a group consisting of, but are not limited to,methylamine, ethylamine, isopropylamine, monomethanolamine,monoethanolamine, monoisopropanolamine, dimethylamine, diethylamine,diisopropylamine, dimethanolamine, diethanolamine, diisopropanolamine,trimethylamine, triethyl amine, tri-isopropylamine, trimethanolamine,triethanolamine, triisopropanolamine, and ammonium, sodium, potassium,lithium, calcium salts of the above acids are also useful. The auxinicherbicidal acidic compounds may be selected from a group consisting of2,4-dichlorophenoxyacetic acid(2,4-D), 2,4-dichlorophenoxypropionicacid(2,4-DP), 2,4-dichlorophenoxybutyric acid(2,4-DB),2-methyl-4-chlorophenoxyacetic acid (MCPA),2-methyl-4-chlorophenoxypropionic acid (MCPP),2-methyl-4-chlorophenoxybutyric acid, 2,4,5-trichlorophenoxyacetic acid,2,3,6-trichlorobenzoic acid, 3,6-dichloro-2-methoxybenzoic acid(dicamba), 2-methoxy-3,5,6-trichlorobenzoic acid,4-chloro-2-oxobenzothiazolin-3-ylacetic acid,4-amino-3,5,6-trichloropicolinic acid, trichloroacetic acid,2,2-dichloropropionic acid, 3-amino-2,5-dichlorobenzoic acid, methanearsonic acid, 2,3,6-trichlorophenylacetic acid,3,6-endoxohexahydrophthalic acid, 3,5,6-trichloro-4-aminopicolinic acid,7-chloro-3-methyl-8-quinolinecarboxylic acid,((4-amino-3,5-dichloro-6-fluoro-2-pyridinyl)oxy)acetic acid,3,4,6-trichloro-2-pyridinyloxyacetic acid,3,6-dichloro-2-pyridinecarboxylic acid, and 1-methylheptyl ester. Esterforms of the auxinic herbicidal agents include carbon chain lengths,either linear or branched, in which from C, to C₂₀ are present.

DETAILED DESCRIPTION OF THE INVENTION

The synergistic composition of this invention resulting from thecombination of quinclorac, a herbicidal protox inhibitor and an auxinicherbicide as active agents normally would include any one of a number ofwell known inert ingredients, depending upon the nature of the productcommercialized. Preferred synergistic formulations are as follows.

EXAMPLE 1 Active Percent of Active Ingredient Ingredient in FormulationQuinclorac 4.3% Sulfentrazone 0.3% 2,4D 8.6%

EXAMPLE 2 Active Percent of Active Ingredient Ingredient in FormulationQuinclorac 4.3% Carfentrazone- 0.2% ethyl MCPA  12%

EXAMPLE 3 Active Percent of Active Ingredient Ingredient in FormulationQuinclorac 4.3% Sulfentrazone 0.3% MCPA  12%

The quinclorac content of the formulation is from about 1.0% to about11.5%, more particularly from about 1.8% to about 4%, and preferably4.3%. The carfentrazone-ethyl, sulfentrazone or pyraflufen-ethyl is fromabout 0.005% to about 0.06%, more particularly from about 0.01% to about0.05%, and preferably from about 0.02% to about 0.03%. The auxinicherbicide is present in the formulation from about 1.7% to about 22.2%,more particularly from about 2.8% to about 16.3%, and preferably about8.6%.

Greenhouse Tests

Pots of crabgrass, dandelion, white clover, and plantain grown ingreenhouse soiless growth media were sprayed with a greenhouse potsprayer at 43.46 gallons of spray solution/acre and allowed to stand inthe greenhouse. Visual observation of the effects made by the herbicidalcompositions on the plants in the test pots was recorded for control ofcrabgrass, dandelion, clover and plantain at 24 hours after treatment(HAT), 48 hours after treatment (HAT), 72 hours after treatment (HAT), 7days after treatment (DAT), 14 days after treatment (DAT) and 21 daysafter treatment (DAT). A control rating scale of 1 to 9 was used torecord the visual observation of the effect of the herbicidalcomposition on the plants over the time period of the tests. 1=nocontrol, and 9=death of plant, with intervening numbers representingsuccessive degrees of observed effectiveness of the herbicidalcomposition over time. The 1-9 control rating scale was converted topercent control in the test data charts that follow.

The test protocol of S. R. Colby as set out in his article entitled“Calculating Synergistic and Antagonistic Responses of HerbicideCompositions,” received for publication Apr. 11, 1966, Contribution No.3796 and Scientific Article No. 1271 of the Maryland AgriculturalExperiment Station, Department pf Agronomy, University of Maryland wasfollowed to evaluate the synergistic properties of the combination ofquinclorac plus a herbicidal protox inhibitor, and a combination ofquinclorac, plus a herbicidal protox inhibitor plus a herbicidal auxinicagent as compared with the individual herbicides, using Colby's formulasE=X+Y−XY/100 for a two herbicide combination, where E=the expectedpercent of inhibition of growth by herbicides, X=the percent inhibitionof growth by herbicide A at p lb/A, and Y=the percent inhibition ofgrowth by herbicide B at q lb/A, for a given combination of twoherbicides. Colby's formula E=X+Y+Z−(XY+XZ+YZ)/100+XYZ/10,000, was usedfor the three-way herbicide combination evaluation, where E, X and Y arethe same as in the two herbicide formula and Z=the percent inhibition ofgrowth by the third herbicide.

It is recognized in the herbicide field that control of grassy weedssuch as crabgrass can be obtained only over a time period of 10 to 14days, whereas with the present synergistic combination, crabgrasscontrol is obtained in as little as seven days as demonstrated by thetest data set forth below.

Test 1 Control (1-9) % Control Crabgrass Dandelion Clover Crab- Dan-Clo- Plan- Crab- Dan- Clo- Plan- Ex- Ex- Ex- grass delion ver tain grassdelion ver tain Treatment pected Actual pected Actual pected Actual 24HAT 24 HAT 2 1 1 22.2 11.1 11.1 Quinclorac @ 0.75 lbs/A 2 1 1 22.2 11.111.1 Quinclorac @ 0.375 lbs/A 2 2 1 22.2 22.2 11.1 Quinclorac @ 0.18lbs/A 3 3 3 33.3 33.3 33.3 Carfentrazone @ 0.02 lbs/A 2 4 3 22.2 44.433.3 Carfentrazone @ 0.01 lbs/A 2 3 1 22.2 33.3 11.1 2,4-D IOE @ 0.70lbs/A 4 4 4 44.4 44.4 44.4 0.75 Quinclorac + 48.1 44.4 40.7 44.4 40.744.4 0.02 Carfentrazone 4 4 4 44.4 44.4 44.4 0.75 Quinclorac + 39.5 44.450.6 44.4 40.7 44.4 0.01 Carfentrazone 3 4 3 33.3 44.4 33.3 0.375Quinclorac + 48.1 33.3 40.7 44.4 40.7 33.3 0.02 Carfentrazone 3 3 3 33.333.3 33.3 0.375 Quinclorac + 39.5 33.3 50.6 33.3 40.7 33.3 0.01Carfentrazone 3 5 4 44.4 55.6 44.4 0.18 Quinclorac + 48.1 33.3 48.1 55.640.7 44.4 0.02 Carfentrazone 4 4 4 44.4 44.4 44.4 0.18 Quinclorac + 39.544.4 56.8 44.4 40.7 44.4 0.01 Carfentrazone 5 5 4 44.4 55.6 44.4 0.75Quinclorac + 59.7 55.6 60.5 55.6 47.3 44.4 0.02 Carfentrazone + 0.702,4-D IOE 5 — 4 55.6 55.6 44.4 0.75 Quinclorac + 52.9 55.6 67.1 55.647.3 44.4 0.01 Carfentrazone + 0.70 2,4-D IOE 5 5 4 44.4 55.6 44.4 0.375Quinclorac + 59.7 55.6 60.5 55.6 47.3 44.4 0.02 Carfentrazone + 0.702,4-D IOE 4 4 4 44.4 44.4 44.4 0.375 Quinclorac + 52.9 44.4 67.1 44.447.3 44.4 0.01 Carfentrazone + 0.70 2,4-D IOE 48 HAT 48 HAT 4 3 3 44.433.3 33.3 Quinclorac @ 0.75 lbs/A 4 3 3 44.4 33.3 33.3 Quinclorac @0.375 lbs/A 3 3 2 33.3 33.3 22.2 Quinclorac @ 0.18 lbs/A 5 5 5 55.6 55.655.6 Carfentrazone @ 0.02 lbs/A 3 5 5 33.3 55.6 55.6 Carfentrazone @0.01 lbs/A 4 4 4 44.4 44.4 44.4 2,4-D IOE @ 0.70 lbs/A 5 6 6 55.6 66.766.7 0.75 Quinclorac + 75.3 55.6 70.4 66.7 70.4 66.7 0.02 Carfentrazone6 7 7 66.7 77.8 77.8 0.75 Quinclorac + 63.0 66.7 70.4 77.8 70.4 77.80.01 Carfentrazone 5 7 7 55.6 77.8 77.8 0.375 Quinclorac + 75.3 55.670.4 77.8 70.4 77.8 0.02 Carfentrazone 7 7 7 77.8 77.8 77.8 0.375Quinclorac + 63.0 77.8 70.4 77.8 70.4 77.8 0.01 Carfentrazone 7 8 7 77.888.9 77.8 0.18 Quinclorac + 70.4 77.8 70.4 88.9 65.4 77.8 0.02Carfentrazone 7 7 7 77.8 77.8 77.8 0.18 Quinclorac + 55.6 77.8 70.4 77.865.4 77.8 0.01 Carfentrazone 8 8 7 88.9 88.9 77.8 0.75 Quinclorac + 86.388.9 83.5 88.9 83.5 77.8 0.02 Carfentrazone + 0.70 2,4-D IOE 8 8 8 88.988.9 88.9 0.75 Quinclorac + 79.4 88.9 83.5 88.9 83.5 88.9 0.01Carfentrazone + 0.70 2,4-D IOE 7 7 7 77.8 77.8 77.8 0.375 Quinclorac +86.3 77.8 83.5 77.8 83.5 77.8 0.02 Carfentrazone + 0.70 2,4-D IOE 7 6 777.8 66.7 77.8 0.375 Quinclorac + 79.4 77.8 83.5 66.7 83.5 77.8 0.01Carfentrazone + 0.70 2,4-D IOE 7 DAT 7 DAT 4 3 3 44.4 33.3 33.3Quinclorac @ 0.75 lbs/A 4 3 3 44.4 33.3 33.3 Quinclorac @ 0.375 lbs/A 43 3 44.4 33.3 33.3 Quinclorac @ 0.18 lbs/A 7 8 6 77.8 88.9 66.7Carfentrazone @ 0.02 lbs/A 7 8 6 77.8 88.9 66.7 Carfentrazone @ 0.01lbs/A 4 6 4 44.4 66.7 44.4 2,4-D IOE @ 0.70 lbs/A 8 8 8 88.9 88.9 88.90.75 Quinclorac + 87.7 88.9 92.6 88.9 77.8 88.9 0.02 Carfentrazone 8 8 888.9 88.9 88.9 0.75 Quinclorac + 87.7 88.9 92.6 88.9 77.8 88.9 0.01Carfentrazone 8 8 8 88.9 88.9 88.9 0.375 Quinclorac + 87.7 88.9 92.688.9 77.8 88.9 0.02 Carfentrazone 8 8 8 88.9 88.9 88.9 0.375Quinclorac + 87.7 88.9 92.6 88.9 77.8 88.9 0.01 Carfentrazone 8 9 8 88.9100.0 88.9 0.18 Quinclorac + 87.7 88.9 92.6 100.0 77.8 88.9 0.02Carfentrazone 8 9 8 88.9 100.0 88.9 0.18 Quinclorac + 87.7 88.9 92.6100.0 77.8 88.9 0.01 Carfentrazone 8 9 8 88.9 100.0 88.9 0.75Quinclorac + 93.1 88.9 97.5 100.0 87.7 88.9 0.02 Carfentrazone + 0.702,4-D IOE 8 9 8 88.9 100.0 88.9 0.75 Quinclorac + 93.1 88.9 97.5 100.087.7 88.9 0.01 Carfentrazone + 0.70 2,4-D IOE 8 9 8 88.9 100.0 88.90.375 Quinclorac + 93.1 88.9 97.5 100.0 87.7 88.9 0.02 Carfentrazone +0.70 2,4-D IOE 8 9 8 88.9 100.0 88.9 0.375 Quinclorac + 93.1 88.9 97.5100.0 87.7 88.9 0.01 Carfentrazone + 0.70 2,4-D IOE 14 DAT 14 DAT 5 6 855.6 66.7 88.9 Quinclorac @ 0.75 lbs/A 5 7 9 55.6 77.8 100.0 Quinclorac@ 0.375 lbs/A 7 8 9 77.8 88.9 100.0 Quinclorac @ 0.18 lbs/A 3 9 9 33.3100.0 100.0 Carfentrazone @ 0.02 lbs/A 3 8 7 33.3 88.9 77.8Carfentrazone @ 0.01 lbs/A 3 9 8 33.3 100.0 88.9 2,4-D IOE @ 0.70 lbs/A8 9 9 88.9 100.0 100.0 0.75 Quinclorac + 70.4 88.4 100.0 100.0 100.0100.0 0.02 Carfentrazone 8 9 9 88.9 100.0 100.0 0.75 Quinclorac + 70.488.9 96.3 100.0 97.5 100.0 0.01 Carfentrazone 7 9 9 77.8 100.0 100.00.375 Quinclorac + 70.4 77.8 100.0 100.0 100.0 100.0 0.02 Carfentrazone6 9 9 66.7 100.0 100.0 0.375 Quinclorac + 70.4 66.7 97.5 100.0 100.0100.0 0.01 Carfentrazone 6 9 8 66.7 100.0 88.9 0.18 Quinclorac + 85.266.7 100.0 100.0 100.0 88.9 0.02 Carfentrazone 7 9 8 77.8 100.0 88.90.18 Quinclorac + 85.2 77.8 98.8 100.0 100.0 88.9 0.01 Carfentrazone 7 99 77.8 100.0 100.0 0.75 Quinclorac + 80.2 77.8 100.0 100.0 100.0 100.00.02 Carfentrazone + 0.70 2,4-D IOE 8 9 9 88.9 100.0 100.0 0.75Quinclorac + 80.2 88.9 100.0 100.0 99.7 100.0 0.01 Carfentrazone + 0.702,4-D IOE 8 9 9 88.4 100.0 100.0 0.375 Quinclorac + 80.2 88.4 100.0100.0 100.0 100.0 0.02 Carfentrazone + 0.70 2,4-D IOE 8 9 9 88.9 100.0100.0 0.375 Quinclorac + 80.2 88.9 100.0 100.0 100.0 100.0 0.01Carfentrazone + 0.70 2,4-D IOE

Test 2 Control (1-9) % Control Crabgrass Dandelion Clover Crab- Dan-Clo- Plan- Crab- Dan- Clo- Plan- Ex- Ex- Ex- grass delion ver tain grassdelion ver tain Treatment pected Actual pected Actual pected Actual 24HAT 24 HAT 2 2 2 22.2 22.2 22.2 Quinclorac @ 0.75 lbs/A 2 2 2 22.2 22.222.2 Quinclorac @ 0.375 lbs/A 3 2 2 33.3 22.2 22.2 Quinclorac @ 0.18lbs/A 4 2 2 44.4 22.2 22.2 Sulfentrazone @ 0.03 lbs/A 3 2 2 33.3 22.222.2 Sulfentrazone @ 0.02 lbs/A 3 3 3 33.3 33.3 33.3 2,4-D IOE @ 0.70lbs/A 4 3 3 44.4 33.3 33.3 0.75 Quinclorac + 56.8 44.4 39.5 33.3 39.533.3 0.03 Sulfentrazone 5 3 5 55.6 33.3 55.6 0.75 Quinclorac + 48.1 55.639.5 33.3 39.5 55.6 0.02 Sulfentrazone 5 3 5 55.6 33.3 55.6 0.375Quinclorac + 56.8 55.6 39.5 33.3 39.5 55.6 0.03 Sulfentrazone 5 3 5 55.633.3 55.6 0.375 Quinclorac + 48.1 55.6 39.5 33.3 39.5 55.6 0.02Sulfentrazone 4 4 4 44.4 44.4 44.4 0.18 Quinclorac + 63.0 44.4 39.5 44.439.5 44.4 0.03 Sulfentrazone 5 4 3 55.6 44.4 33.3 0.18 Quinclorac + 55.655.6 39.5 44.4 39.5 33.3 0.02 Sulfentrazone 6 5 6 66.7 55.6 66.7 0.75Quinclorac + 71.2 66.7 59.7 55.6 59.7 66.7 0.03 Sulfentrazone + 0.702,4-D IOE 6 5 6 66.7 55.6 66.7 0.75 Quinclorac + 65.4 66.7 59.7 55.659.7 66.7 0.02 Sulfentrazone + 0.70 2,4-D IOE 6 5 6 66.7 55.6 66.7 0.375Quinclorac + 71.2 66.7 59.7 55.6 59.7 66.7 0.03 Sulfentrazone + 0.702,4-D IOE 6 5 6 66.7 55.6 66.7 0.375 Quinclorac + 65.4 66.7 59.7 55.659.7 66.7 0.02 Sulfentrazone + 0.70 2,4-D IOE 72 HAT 72 HAT 4 3 3 44.433.3 33.3 Quinclorac @ 0.75 lbs/A 3 3 3 33.3 33.3 33.3 Quinclorac @0.375 lbs/A 4 5 3 44.4 55.6 33.3 Quinclorac @ 0.18 lbs/A 3 4 2 33.3 44.422.2 Sulfentrazone @ 0.03 lbs/A 3 4 3 33.3 44.4 33.3 Sulfentrazone @0.02 lbs/A 6 6 6 66.7 66.7 66.7 2,4-D IOE @ 0.70 lbs/A 7 8 7 77.8 88.977.8 0.75 Quinclorac + 63.0 77.8 63.0 88.9 48.1 77.8 0.03 Sulfentrazone7 8 6 77.8 88.9 66.7 0.75 Quinclorac + 63.0 77.8 63.0 88.9 55.6 66.70.02 Sulfentrazone 5 8 4 55.6 88.9 44.4 0.375 Quinclorac + 55.6 55.663.0 88.9 48.1 44.4 0.03 Sulfentrazone 6 8 5 66.7 88.9 55.6 0.375Quinclorac + 55.6 66.7 63.0 88.9 55.6 55.6 0.02 Sulfentrazone 6 8 4 66.788.9 44.4 0.18 Quinclorac + 63.0 66.7 75.3 88.9 48.1 44.4 0.03Sulfentrazone 6 8 4 66.7 88.9 44.4 0.18 Quinclorac + 63.0 66.7 75.3 88.955.6 44.4 0.02 Sulfentrazone 8 8 8 88.9 88.9 88.9 0.75 Quinclorac + 87.788.9 87.7 88.9 82.7 88.9 0.03 Sulfentrazone + 0.70 2,4-D IOE 8 8 8 88.988.9 88.9 0.75 Quinclorac + 87.7 88.9 87.7 88.9 85.2 88.9 0.02Sulfentrazone + 0.70 2,4-D IOE 8 8 8 88.9 88.9 88.9 0.375 Quinclorac +85.2 88.9 87.7 88.9 82.7 88.9 0.03 Sulfentrazone + 0.70 2,4-D IOE 8 8 888.9 88.9 88.9 0.375 Quinclorac + 85.2 88.9 87.7 88.9 85.2 88.9 0.02Sulfentrazone + 0.70 2,4-D IOE 7 DAT 7 DAT 7 3 7 77.8 33.3 77.8Quinclorac @ 0.75 lbs/A 7 3 7 77.8 33.3 77.8 Quinclorac @ 0.375 lbs/A 38 6 33.3 88.9 66.7 Quinclorac @ 0.18 lbs/A 2 8 5 22.2 88.9 55.6Sulfentrazone @ 0.03 lbs/A 2 8 7 22.2 88.9 77.8 Sulfentrazone @ 0.02lbs/A 2 8 6 22.2 88.9 66.7 2,4-D IOE @ 0.70 lbs/A 8 8 8 88.9 88.9 88.90.75 Quinclorac + 82.7 88.9 92.6 88.9 90.1 88.9 0.03 Sulfentrazone 7 8 677.8 88.9 66.7 0.75 Quinclorac + 82.7 77.8 92.6 88.9 95.1 66.7 0.02Sulfentrazone 8 8 8 88.9 88.9 88.9 0.375 Quinclorac + 82.7 88.9 92.688.9 90.1 88.9 0.03 Sulfentrazone 6 8 7 66.7 88.9 77.8 0.375Quinclorac + 82.7 66.7 92.6 88.9 95.1 77.8 0.02 Sulfentrazone 6 8 7 66.788.9 77.8 0.18 Quinclorac + 48.1 66.7 98.8 88.9 85.2 77.8 0.03Sulfentrazone 6 8 7 66.7 88.9 77.8 0.18 Quinclorac + 48.1 66.7 98.8 88.992.6 77.8 0.02 Sulfentrazone 8 9 8 88.9 100.0 88.9 0.75 Quinclorac +86.6 88.9 99.2 100.0 96.7 88.9 0.03 Sulfentrazone + 0.70 2,4-D IOE 8 9 888.9 100.0 88.9 0.75 Quinclorac + 86.6 88.9 99.2 100.0 98.4 88.9 0.02Sulfentrazone + 0.70 2,4-D IOE 8 9 8 88.9 100.0 88.9 0.375 Quinclorac +86.6 88.9 99.2 100.0 96.7 88.9 0.03 Sulfentrazone + 0.70 2,4-D IOE 8 9 888.9 100.0 88.9 0.375 Quinclorac + 86.6 88.9 99.2 100.0 98.4 88.9 0.02Sulfentrazone + 0.70 2,4-D IOE 14 DAT 14 DAT 8 6 9 88.9 66.7 100.0Quinclorac @ 0.75 lbs/A 7 8 9 77.8 88.9 100.0 Quinclorac @ 0.375 lbs/A 58 9 55.6 88.9 100.0 Quinclorac @ 0.18 lbs/A 2 8 6 22.2 88.9 66.7Sulfentrazone @ 0.03 lbs/A 2 8 7 22.2 88.9 77.8 Sulfentrazone @ 0.02lbs/A 2 9 9 22.2 100.0 100.0 2,4-D IOE @ 0.70 lbs/A 8 9 9 88.9 100.0100.0 0.75 Quinclorac + 91.4 88.9 96.3 100.0 100.0 100.0 0.03Sulfentrazone 7 9 9 77.8 100.0 100.0 0.75 Quinclorac + 91.4 77.8 96.3100.0 100.0 100.0 0.02 Sulfentrazone 7 9 9 77.8 100.0 100.0 0.375Quinclorac + 82.7 77.8 98.8 100.0 100.0 100.0 0.03 Sulfentrazone 6 9 966.7 100.0 100.0 0.375 Quinclorac + 82.7 66.7 98.8 100.0 100.0 100.00.02 Sulfentrazone 6 9 9 66.7 100.0 100.0 0.18 Quinclorac + 65.4 66.798.8 100.0 100.0 100.0 0.03 Sulfentrazone 7 9 9 77.8 100.0 100.0 0.18Quinclorac + 65.4 77.8 98.8 100.0 100.0 100.0 0.02 Sulfentrazone 8 9 988.9 100.0 100.0 0.75 Quinclorac + 93.3 88.9 100.0 100.0 100.0 100.00.03 Sulfentrazone + 0.70 2,4-D IOE 8 9 9 88.9 100.0 100.0 0.75Quinclorac + 93.3 88.9 100.0 100.0 100.0 100.0 0.02 Sulfentrazone + 0.702,4-D IOE 8 9 9 88.9 100.0 100.0 0.375 Quinclorac + 86.6 88.9 100.0100.0 100.0 100.0 0.03 Sulfentrazone + 0.70 2,4-D IOE 7 9 9 77.8 100.0100.0 0.375 Quinclorac + 86.6 77.8 100.0 100.0 100.0 100.0 0.02Sulfentrazone + 0.70 2,4-D IOE

Test 3 Control (1-9) % Control Dan- Dan- Crabgrass Dandelion CloverPlantain Crab- de- Clo- Plan- Crab- de- Clo- Plan- Ex- Ex- Ex- Ex- grasslion ver tain grass lion ver tain Treatment pected Actual pected Actualpected Actual pected Actual 24 HAT 24 HAT 1 1 1 1 11.1 11.1 11.1 11.1Quinclorac @ 0.75 lbs/A 1 1 1 1 11.1 11.1 11.1 11.1 Quinclorac @ 0.375lbs/A 1 1 1 1 11.1 11.1 11.1 11.1 Quinclorac @ 0.18 lbs/A 1 3 2 4 11.133.3 22.2 44.4 Sulfen- trazone @ 0.03 lbs/A 1 3 3 4 11.1 33.3 33.3 44.4Sulfen- trazone @ 0.02 lbs/A 1 3 4 4 11.1 33.3 44.4 44.4 MCPA IOE @ 1.10lbs/A 1 2 2 4 11.1 22.2 22.2 44.4 0.75 21.0 11.1 40.7 22.2 30.9 22.250.6 44.4 Quinclorac + 0.03 Sulfentrazone 1 2 2 4 11.1 22.2 22.2 44.40.75 21.0 11.1 40.7 22.2 40.7 22.2 50.6 44.4 Quinclorac + 0.02Sulfentrazone 1 2 2 4 11.1 22.2 22.2 44.4 0.375 21.0 11.1 40.7 22.2 30.922.2 50.6 44.4 Quinclorac + 0.03 Sulfentrazone 1 3 2 5 11.1 33.3 22.255.6 0.375 21.0 11.1 40.7 33.3 40.7 22.2 50.6 55.6 Quinclorac + 0.02Sulfentrazone 1 3 3 5 11.1 33.3 33.3 55.6 0.18 21.0 11.1 40.7 33.3 30.933.3 50.6 55.6 Quinclorac + 0.03 Sulfentrazone 1 3 3 5 11.1 33.3 33.355.6 0.18 21.0 11.1 40.7 33.3 40.7 33.3 50.6 55.6 Quinclorac + 0.02Sulfentrazone 1 3 4 5 11.1 33.3 44.4 55.6 0.75 29.8 11.1 60.5 33.3 61.644.4 72.6 55.6 Quinclorac + 0.03 Sulfen- trazone + 1.10 MCPA IOE 1 3 3 411.1 33.3 33.3 44.4 0.75 29.8 11.1 60.5 33.3 67.1 33.3 72.6 44.4Quinclorac + 0.02 Sulfen- trazone + 1.10 MCPA IOE 1 3 4 4 11.1 33.3 44.444.4 0.375 29.8 11.1 60.5 33.3 61.6 44.4 72.6 44.4 Quinclorac + 0.03Sulfen- trazone + 1.10 MCPA IOE 1 3 4 4 11.1 33.3 44.4 44.4 0.375 29.811.1 60.5 33.3 67.1 44.4 72.6 44.4 Quinclorac + 0.02 Sulfen- trazone +1.10 MCPA IOE 72 HAT 72 HAT 2 2 2 2 22.2 22.2 22.2 22.2 Quinclorac @0.75 lbs/A 1 2 2 2 11.1 22.2 22.2 22.2 Quinclorac @ 0.375 lbs/A 1 2 2 211.1 22.2 22.2 22.2 Quinclorac @ 0.18 lbs/A 4 5 3 6 44.4 55.6 33.3 66.7Sulfen- trazone @ 0.03 lbs/A 2 3 2 8 22.2 33.3 22.2 88.9 Sulfen- trazone@ 0.02 lbs/A 1 5 4 4 11.1 55.6 44.4 44.4 MCPA IOE @ 1.10 lbs/A 3 5 4 833.3 55.6 44.4 88.9 0.75 56.8 33.3 65.4 55.6 48.1 44.4 74.1 88.9Quinclorac + 0.03 Sulfentrazone 3 5 5 7 33.3 55.6 55.6 77.8 0.75 39.533.3 48.1 55.6 39.5 55.6 91.4 77.8 Quinclorac + 0.02 Sulfentrazone 5 5 48 55.6 55.6 44.4 88.9 0.375 50.6 55.6 65.4 55.6 48.1 44.4 74.1 88.9Quinclorac + 0.03 Sulfentrazone 4 5 3 7 44.4 55.6 33.3 77.8 0.375 30.944.4 48.1 55.6 39.5 33.3 91.4 77.8 Quinclorac + 0.02 Sulfentrazone 5 5 48 55.6 55.6 44.4 88.9 0.18 50.6 55.6 65.4 55.6 48.1 44.4 74.1 88.9Quinclorac + 0.03 Sulfentrazone 4 4 5 7 44.4 44.4 55.6 77.8 0.18 30.944.4 48.1 44.4 39.5 55.6 91.4 77.8 Quinclorac + 0.02 Sulfentrazone 7 6 68 77.8 66.7 66.7 88.9 0.75 61.6 77.8 84.6 66.7 71.2 66.7 85.6 88.9Quinclorac + 0.03 Sulfen- trazone + 1.10 MCPA IOE 7 6 6 8 77.8 66.7 66.788.9 0.75 46.2 77.8 77.0 66.7 66.4 66.7 95.2 88.9 Quinclorac + 0.02Sulfen- trazone + 1.10 MCPA IOE 7 6 6 8 77.8 66.7 66.7 88.9 0.375 56.177.8 84.6 66.7 71.2 66.7 85.6 88.9 Quinclorac + 0.03 Sulfen- trazone +1.10 MCPA IOE 7 6 6 8 77.8 66.7 66.7 88.9 0.375 38.5 77.8 77.0 66.7 66.466.7 95.2 88.9 Quinclorac + 0.02 Sulfen- trazone + 1.10 MCPA IOE 7 DAT 7DAT 2 2 4 3 22.2 22.2 44.4 33.3 Quinclorac @ 0.75 lbs/A 2 2 4 3 22.222.2 44.4 33.3 Quinclorac @ 0.375 lbs/A 2 2 4 2 22.2 22.2 44.4 22.2Quinclorac @ 0.18 lbs/A 5 6 4 8 55.6 66.7 44.4 88.9 Sulfen- trazone @0.03 lbs/A 4 4 3 9 44.4 44.4 33.3 100.0 Sulfen- trazone @ 0.02 lbs/A 1 66 6 11.1 66.7 66.7 66.7 MCPA IOE @ 1.10 lbs/A 6 6 4 9 66.7 66.7 44.4100.0 0.75 65.4 66.7 74.1 66.7 69.1 44.4 92.6 100.0 Quinclorac + 0.03Sulfentrazone 7 6 4 8 77.8 66.7 44.4 88.9 0.75 56.8 77.8 56.8 66.7 63.044.4 100.0 88.9 Quinclorac + 0.02 Sulfentrazone 7 7 4 9 77.8 77.8 44.4100.0 0.375 65.4 77.8 74.1 77.8 69.1 44.4 92.6 100.0 Quinclorac + 0.03Sulfentrazone 6 7 4 8 66.7 77.8 44.4 88.9 0.375 56.8 66.7 56.8 77.8 63.044.4 100.0 88.9 Quinclorac + 0.02 Sulfentrazone 6 6 4 9 66.7 66.7 44.4100.0 0.18 65.4 66.7 74.1 66.7 69.1 44.4 91.4 100.0 Quinclorac + 0.03Sulfentrazone 6 6 4 8 66.7 66.7 44.4 88.9 0.18 56.8 66.7 56.8 66.7 63.044.4 100.0 88.9 Quinclorac + 0.02 Sulfentrazone 8 8 8 9 88.9 88.9 88.9100.0 0.75 69.3 88.9 91.4 88.9 89.7 88.9 97.5 100.0 Quinclorac + 0.03Sulfen- trazone + 1.10 MCPA IOE 8 8 8 9 88.9 88.9 88.9 100.0 0.75 61.688.9 85.6 88.9 87.7 88.9 100.0 100.0 Quinclorac + 0.02 Sulfen- trazone +1.10 MCPA IOE 8 8 8 9 88.9 88.9 88.9 100.0 0.375 69.3 88.9 91.4 88.989.7 88.9 97.5 100.0 Quinclorac + 0.03 Sulfen- trazone + 1.10 MCPA IOE 88 8 9 88.9 88.9 88.9 100.0 0.375 61.6 88.9 85.6 88.9 87.7 88.9 100.0100.0 Quinclorac + 0.02 Sulfen- trazone + 1.10 MCPA IOE 14 DAT 14 DAT 54 5 5 66.7 44.4 55.6 55.6 Quinclorac @ 0.75 lbs/A 4 4 5 4 44.4 44.4 55.644.4 Quinclorac @ 0.375 lbs/A 3 3 4 3 33.3 33.3 44.4 33.3 Quinclorac @0.18 lbs/A 5 7 5 8 55.6 77.8 55.6 88.9 Sulfen- trazone @ 0.03 lbs/A 4 74 9 44.4 77.8 44.4 100.0 Sulfen- trazone @ 0.02 lbs/A 2 7 8 7 22.2 77.888.9 77.8 MCPA IOE @ 1.10 lbs/A 7 7 5 9 77.8 77.8 55.6 100.0 0.75 85.277.8 87.7 77.8 80.2 55.6 95.1 100.0 Quinclorac + 0.03 Sulfentrazone 7 85 8 77.8 88.9 55.6 88.9 0.75 81.5 77.8 87.7 88.9 75.3 55.6 100.0 88.9Quinclorac + 0.02 Sulfentrazone 7 8 5 9 77.8 88.9 55.6 100.0 0.375 75.377.8 87.7 88.9 80.2 55.6 93.8 100.0 Quinclorac + 0.03 Sulfentrazone 7 85 9 77.8 88.9 55.6 100.0 0.375 69.1 77.8 87.7 88.9 75.3 55.6 100.0 100.0Quinclorac + 0.02 Sulfentrazone 7 8 5 9 77.8 88.9 55.6 100.0 0.18 70.477.8 85.2 88.9 75.3 55.6 92.6 100.0 Quinclorac + 0.03 Sulfentrazone 7 85 9 77.8 88.9 55.6 100.0 0.18 63.0 77.8 85.2 88.9 69.1 55.6 100.0 100.0Quinclorac + 0.02 Sulfentrazone 8 8 8 9 88.9 88.9 88.9 100.0 0.75 88.588.9 97.3 88.9 97.8 88.9 98.9 100.0 Quinclorac + 0.03 Sulfen- trazone +1.10 MCPA IOE 8 8 8 9 88.9 88.9 88.9 100.0 0.75 85.6 88.9 97.3 88.9 97.388.9 100.0 100.0 Quinclorac + 0.02 Sulfen- trazone + 1.10 MCPA IOE 8 8 89 88.9 88.9 88.9 100.0 0.375 80.8 88.9 97.3 88.9 97.8 88.9 98.6 100.0Quinclorac + 0.03 Sulfen- trazone + 1.10 MCPA IOE 8 8 8 9 88.9 88.9 88.9100.0 0.375 76.0 88.9 97.3 88.9 97.3 88.9 100.0 100.0 Quinclorac + 0.02Sulfen- trazone + 1.10 MCPA IOE 21 DAT 21 DAT 7 3 8 5 77.8 33.3 88.955.6 Quinclorac @ 0.75 lbs/A 6 5 8 4 66.7 55.6 88.9 44.4 Quinclorac @0.375 lbs/A 3 3 6 3 33.3 33.3 66.7 33.3 Quinclorac @ 0.18 lbs/A 4 7 5 944.4 77.8 55.6 100.0 Sulfen- trazone @ 0.03 lbs/A 3 6 4 9 33.3 66.7 44.4100.0 Sulfen- trazone @ 0.02 lbs/A 4 8 9 7 44.4 88.9 100.0 77.8 MCPA IOE@ 1.10 lbs/A 7 9 6 9 77.8 100.0 66.7 100.0 0.75 87.7 77.8 85.2 100.095.1 66.7 100.0 100.0 Quinclorac + 0.03 Sulfentrazone 7 9 5 9 77.8 100.055.6 100.0 0.75 85.2 77.8 77.8 100.0 93.8 55.6 100.0 100.0 Quinclorac +0.02 Sulfentrazone 7 8 7 9 77.8 88.9 77.8 100.0 0.375 81.5 77.8 90.188.9 95.1 77.8 100.0 100.0 Quinclorac + 0.03 Sulfentrazone 7 8 6 9 77.888.9 66.7 100.0 0.375 77.8 77.8 85.2 88.9 93.8 66.7 100.0 100.0Quinclorac + 0.02 Sulfentrazone 7 8 7 9 77.8 88.9 77.8 100.0 0.18 62.977.8 85.2 88.9 85.2 77.8 100.0 100.0 Quinclorac + 0.03 Sulfentrazone 7 86 9 77.8 88.9 66.7 100.0 0.18 55.6 77.8 77.8 88.9 81.5 66.7 100.0 100.0Quinclorac + 0.02 Sulfentrazone 8 9 9 9 88.9 100.0 100.0 100.0 0.75 93.188.9 98.4 100.0 100.0 100.0 100.0 100.0 Quinclorac + 0.03 Sulfen-trazone + 1.10 MCPA IOE 8 8 9 9 88.9 88.9 100.0 100.0 0.75 91.8 88.997.5 88.9 100.0 100.0 100.0 100.0 Quinclorac + 0.02 Sulfen- trazone +1.10 MCPA IOE 8 9 9 9 88.9 100.0 100.0 100.0 0.375 89.7 88.9 98.9 100.0100.0 100.0 100.0 100.0 Quinclorac + 0.03 Sulfen- trazone + 1.10 MCPAIOE 8 9 9 9 88.9 100.0 100.0 100.0 0.375 87.7 88.9 98.4 100.0 100.0100.0 100.0 100.0 Quinclorac + 0.02 Sulfen- trazone + 1.10 MCPA IOE

Test 4 Control (1-9) % Control Dan- Dan- Crabgrass Dandelion CloverPlantain Crab- de- Clo- Plan- Crab- de- Clo- Plan- Ex- Ex- Ex- Ex- grasslion ver tain grass lion ver tain Treatment pected Actual pected Actualpected Actual pected Actual 24 HAT 24 HAT 1 1 1 1 11.1 11.1 11.1 11.1Quinclorac @ 0.75 lbs/A 1 2 1 1 11.1 22.2 11.1 11.1 Quinclorac @ 0.375lbs/A 1 1 1 1 11.1 11.1 11.1 11.1 Quinclorac @ 0.18 lbs/A 1 3 4 3 11.133.3 44.4 33.3 Carfen- trazone @ 0.02 lbs/A 1 2 2 3 11.1 22.2 22.2 33.3Carfen- trazone @ 0.01 lbs/A 1 3 4 2 11.1 33.3 44.4 22.2 MCPA IOE @ 1.10lbs/A 1 3 4 4 11.1 33.3 44.4 44.4 0.75 21.0 11.1 40.7 33.3 50.6 44.440.7 44.4 Quinclorac + 0.02 Carfentrazone 1 3 3 4 11.1 33.3 33.3 44.40.75 21.0 11.1 30.9 33.3 30.9 33.3 40.7 44.4 Quinclorac + 0.01Carfentrazone 1 3 3 5 11.1 33.3 33.3 55.6 0.375 21.0 11.1 48.1 33.3 50.633.3 40.7 55.6 Quinclorac + 0.02 Carfentrazone 1 3 3 4 11.1 33.3 33.344.4 0.375 21.0 11.1 39.5 33.3 30.9 33.3 40.7 44.4 Quinclorac + 0.01Carfentrazone 1 3 3 4 11.1 33.3 33.3 44.4 0.18 21.0 11.1 40.7 33.3 50.633.3 40.7 44.4 Quinclorac + 0.02 Carfentrazone 1 3 3 5 11.1 33.3 33.355.6 0.18 21.0 11.1 30.9 33.3 30.9 33.3 40.7 55.6 Quinclorac + 0.01Carfentrazone 1 3 5 4 11.1 33.3 55.6 44.4 0.75 29.8 11.1 60.5 33.3 72.655.6 53.9 44.4 Quinclorac + 0.02 Carfen- trazone + 1.10 MCPA IOE 1 4 5 511.1 44.4 55.6 55.6 0.75 29.8 11.1 53.9 44.4 61.6 55.6 53.9 55.6Quinclorac + 0.01 Carfen- trazone + 1.10 MCPA IOE 1 4 5 5 11.1 44.4 55.655.6 0.375 29.8 11.1 65.4 44.4 72.6 55.6 53.9 55.6 Quinclorac + 0.02Carfen- trazone + 1.10 MCPA IOE 1 4 5 5 11.1 44.4 55.6 55.6 0.375 29.811.1 59.7 44.4 61.6 55.6 53.9 55.6 Quinclorac + 0.01 Carfen- trazone +1.10 MCPA IOE 72 HAT 72 HAT 2 2 2 3 22.2 22.2 22.2 33.3 Quinclorac @0.75 lbs/A 1 2 2 2 11.1 22.2 22.2 22.2 Quinclorac @ 0.375 lbs/A 1 2 2 211.1 22.2 22.2 22.2 Quinclorac @ 0.18 lbs/A 4 5 4 6 44.4 55.6 44.4 66.7Carfen- trazone @ 0.02 lbs/A 2 3 4 8 22.2 33.3 44.4 88.9 Carfen- trazone@ 0.01 lbs/A 1 5 5 4 11.1 55.6 55.6 44.4 MCPA IOE @ 1.10 lbs/A 3 5 5 833.3 55.6 55.6 88.9 0.75 56.8 33.3 65.4 55.6 56.8 55.6 77.8 88.9Quinclorac + 0.02 Carfentrazone 3 5 5 8 33.3 55.6 55.6 88.9 0.75 39.533.3 48.1 55.6 56.8 55.6 92.6 88.9 Quinclorac + 0.01 Carfentrazone 5 5 48 55.6 55.6 44.4 88.9 0.375 50.6 55.6 65.4 55.6 56.8 44.4 74.1 88.9Quinclorac + 0.02 Carfentrazone 3 5 4 8 33.3 55.6 44.4 88.9 0.375 30.933.3 48.1 55.6 56.8 44.4 91.4 88.9 Quinclorac + 0.01 Carfentrazone 5 5 58 55.6 55.6 55.6 88.9 0.18 50.6 55.6 65.4 55.6 56.8 55.6 74.1 88.9Quinclorac + 0.02 Carfentrazone 4 6 5 8 44.4 66.7 55.6 88.9 0.18 30.944.4 48.1 66.7 56.8 55.6 91.4 88.9 Quinclorac + 0.01 Carfentrazone 6 6 68 66.7 66.7 66.7 88.9 0.75 61.6 66.7 84.6 66.7 80.8 66.7 87.7 88.9Quinclorac + 0.02 Carfen- trazone + 1.10 MCPA IOE 5 6 6 8 55.6 66.7 66.788.9 0.75 46.2 55.6 77.0 66.7 80.8 66.7 95.9 88.9 Quinclorac + 0.01Carfen- trazone + 1.10 MCPA IOE 6 7 6 8 66.7 77.8 66.7 88.9 0.375 56.166.7 84.6 77.8 80.8 66.7 85.6 88.9 Quinclorac + 0.02 Carfen- trazone +1.10 MCPA IOE 5 7 6 8 55.6 77.8 66.7 88.9 0.375 38.5 55.6 77.0 77.8 80.866.7 95.2 88.9 Quinclorac + 0.01 Carfen- trazone + 1.10 MCPA IOE 7 DAT 7DAT 2 2 3 3 22.2 22.2 33.3 33.3 Quinclorac @ 0.75 lbs/A 2 2 4 2 22.222.2 44.4 22.2 Quinclorac @ 0.375 lbs/A 1 2 3 3 11.1 22.2 33.3 33.3Quinclorac @ 0.18 lbs/A 5 8 7 8 55.6 88.9 77.8 88.9 Carfen- trazone @0.02 lbs/A 5 5 6 9 55.6 55.6 66.7 100.0 Carfen- trazone @ 0.01 lbs/A 1 46 6 11.1 44.4 66.7 66.7 MCPA IOE @ 1.10 lbs/A 6 8 6 9 66.7 88.9 66.7100.0 0.75 65.4 66.7 91.4 88.9 85.2 66.7 92.6 100.0 Quinclorac + 0.02Carfentrazone 6 8 6 9 66.7 88.9 66.7 100.0 0.75 65.4 66.7 65.4 88.9 77.866.7 100.0 100.0 Quinclorac + 0.01 Carfentrazone 6 8 6 9 66.7 88.9 66.7100.0 0.375 65.5 66.7 91.4 88.9 87.7 66.7 91.4 100.0 Quinclorac + 0.02Carfentrazone 5 7 6 8 55.6 77.8 66.7 88.9 0.375 65.4 55.6 65.4 77.8 81.566.7 100.0 88.9 Quinclorac + 0.01 Carfentrazone 6 8 6 9 66.7 88.9 66.7100.0 0.18 60.5 66.7 91.4 88.9 85.2 66.7 92.6 100.0 Quinclorac + 0.02Carfentrazone 6 8 6 8 66.7 88.9 66.7 88.9 0.18 60.5 66.7 65.4 88.9 77.866.7 100.0 88.9 Quinclorac + 0.01 Carfentrazone 8 8 9 9 88.9 88.9 100.0100.0 0.75 69.3 77.8 95.2 88.9 95.1 100.0 97.5 100.0 Quinclorac + 0.02Carfen- trazone + 1.10 MCPA IOE 7 8 9 8 77.8 88.9 100.0 88.9 0.75 69.377.8 80.8 88.9 92.6 100.0 100.0 88.9 Quinclorac + 0.01 Carfen- trazone +1.10 MCPA IOE 7 9 9 9 77.8 100.0 100.0 100.0 0.375 69.3 77.8 95.2 100.095.9 100.0 97.1 100.0 Quinclorac + 0.02 Carfen- trazone + 1.10 MCPA IOE7 8 9 9 77.8 88.9 100.0 100.0 0.375 69.3 77.8 80.8 88.9 93.8 100.0 100.0100.0 Quinclorac + 0.01 Carfen- trazone + 1.10 MCPA IOE 14 DAT 14 DAT 52 4 3 44.4 22.2 44.4 33.3 Quinclorac @ 0.75 lbs/A 3 2 5 2 33.3 22.2 55.622.2 Quinclorac @ 0.375 lbs/A 2 2 3 3 22.2 22.2 33.3 33.3 Quinclorac @0.18 lbs/A 5 8 8 8 55.6 88.9 88.9 88.9 Carfen- trazone @ 0.02 lbs/A 5 56 9 55.6 55.6 66.7 100.0 Carfen- trazone @ 0.01 lbs/A 1 5 9 6 11.1 55.6100.0 66.7 MCPA IOE @ 1.10 lbs/A 7 9 8 9 77.8 100.0 88.9 100.0 0.75 75.377.8 91.4 100.0 93.8 88.9 92.6 100.0 Quinclorac + 0.02 Carfentrazone 8 87 9 88.9 88.9 77.8 100.0 0.75 75.3 88.9 65.4 88.9 81.5 77.8 100.0 100.0Quinclorac + 0.01 Carfentrazone 8 8 7 9 88.9 88.9 77.8 100.0 0.375 70.488.9 91.4 88.9 95.1 77.8 91.4 100.0 Quinclorac + 0.02 Carfentrazone 7 87 9 77.8 88.9 77.8 100.0 0.375 70.4 77.8 65.4 88.9 85.2 77.8 100.0 100.0Quinclorac + 0.01 Carfentrazone 7 8 7 9 77.8 88.9 77.8 100.0 0.18 65.577.8 91.4 88.9 92.6 77.8 92.6 100.0 Quinclorac + 0.02 Carfentrazone 7 87 9 77.8 88.9 77.8 100.0 0.18 65.4 77.8 65.4 88.9 77.8 77.8 100.0 100.0Quinclorac + 0.01 Carfentrazone 8 9 9 9 88.9 100.0 100.0 100.0 0.75 78.188.9 96.2 100.0 100.0 100.0 97.5 100.0 Quinclorac + 0.02 Carfen-trazone + 1.10 MCPA IOE 8 9 9 9 88.9 100.0 100.0 100.0 0.75 78.0 88.984.6 100.0 100.0 100.0 100.0 100.0 Quinclorac + 0.01 Carfen- trazone +1.10 MCPA IOE 8 9 9 9 88.9 100.0 100.0 100.0 0.375 73.7 88.9 96.2 100.0100.0 100.0 97.1 100.0 Quinclorac + 0.02 Carfen- trazone + 1.10 MCPA IOE8 9 9 9 88.9 100.0 100.0 100.0 0.375 73.7 88.9 84.6 100.0 100.0 100.0100.0 100.0 Quinclorac + 0.01 Carfen- trazone + 1.10 MCPA IOE

1. A selective synergistic postemergent herbicidal composition for thecontrol of undesired vegetation when applied at a recommendedapplication rate to the locus of the undesired vegetation, saidcomposition comprising as herbicidally active ingredients: quincloracherbicide; a selective herbicidal protox inhibitor; and a selectiveherbicidal auxinic agent, said composition when applied for undesiredvegetation control containing sufficient amounts of the quinclorac, theprotox inhibitor and the auxinic agent to supply from about 0.1 to about1 lb/acre of quinclorac, from about 0.005 to about 0.06 lb/acre of theprotox inhibitor, and from about 0.15 to about 2 lbs/acre of the auxinicagent.
 2. A herbicidal composition as set forth in claim 1, wherein thecomposition as applied for undesired vegetation control contains anamount of quinclorac sufficient to supply from about 0.18 to about 0.75lb/acre of quinclorac.
 3. A herbicidal composition as set forth in claim1, wherein the composition as applied for undesired vegetation controlcontains an amount of said quinclorac agent sufficient to supply about0.375 lb/acre of quinclorac.
 4. A herbicidal composition as set forth inclaim 1, wherein the composition as applied for undesired vegetationcontrol contains an amount of the protox inhibitor sufficient to supplyfrom about 0.01 to about 0.05 lb/acre of the protox inhibitor.
 5. Aherbicidal composition as set forth in claim 1, wherein the compositionas applied for undesired vegetation control contains an amount of theprotox inhibitor sufficient to supply from about 0.02 to about 0.03lb/acre of the protox inhibitor.
 6. A herbicidal composition as setforth in claim 1, wherein the composition as applied for undesiredvegetation control contains an amount of the auxinic agent sufficient tosupply from about 0.25 to about 1.5 lb/acre of said auxinic agent.
 7. Aherbicidal composition as set forth in claim 1, wherein the compositionas applied for undesired vegetation control contains an amount of theauxinic agent sufficient to supply about 0.75 lb/acre of the auxinicagent.
 8. A herbicidal composition as set forth in claim 1, wherein theprotox inhibitor is selected from the group consisting ofcarfentrazone-ethyl, sulfentrazone, pyraflufen-ethyl, flumioxazin,fluthiacet-methyl and oxyfluorfen.
 9. A herbicidal composition as setforth in claim 1, wherein the protox inhibitor is carfentrazone-ethyl.10. A herbicidal composition as set forth in claim 1, wherein the protoxinhibitor is sulfentrazone.
 11. A herbicidal composition as set forth inclaim 1, wherein the protox inhibitor is pyraflufen-ethyl.
 12. Aherbicidal composition as set forth in claim 1, wherein the auxinicherbicidal agent is selected from the group consisting of herbicidallyactive phenoxy, benzoic, pyridine, quinolinecarboxylic acid compounds,other than quinclorac, and esters and amine and inorganic salts thereof.13. A selective synergistic postemergent herbicidal composition for thecontrol of undesired vegetation when applied at a recommendedapplication rate to the locus of the undesired vegetation, saidcomposition comprising as herbicidally active ingredients: quincloracherbicide; and a selective protox herbicidal inhibitor, said compositionwhen applied for undesired vegetation control containing sufficientamounts of said quinclorac and the protox inhibitor to supply from about0.1 to about 1 lb/acre of quinclorac and from about 0.005 to about 0.06lb/acre of the protox herbicidal inhibitor.
 14. A herbicidal compositionas set forth in claim 13, wherein the composition as applied forundesired vegetation control contains an amount of quinclorac sufficientto supply from about 0.18 to about 0.75 lb/acre of quinclorac.
 15. Aherbicidal composition as set forth in claim 13, wherein the compositionas applied for undesired vegetation control contains an amount ofquinclorac sufficient to supply about 0.375 lb/acre of quinclorac.
 16. Aherbicidal composition as set forth in claim 13, wherein the compositionas applied for undesired vegetation control contains an amount of theprotox inhibitor sufficient to supply from about 0.01 to about 0.05lb/acre of the protox inhibitor.
 17. A herbicidal composition as setforth in claim 13, wherein the composition as applied for undesiredvegetation control contains an amount of the protox inhibitor sufficientto supply from about 0.02 to about 0.03 lb/acre of the protox inhibitor.18. A herbicidal composition as set forth in claim 13, wherein theprotox inhibitor is selected from the group consisting ofcarfentrazone-ethyl, sulfentrazone, pyraflufen-ethyl, flumioxazin,fluthiacet-methyl and oxyfluorfen.
 19. A herbicidal composition as setforth in claim 13, wherein the protox inhibitor is carfentrazone-ethyl.20. A herbicidal composition as set forth in claim 13, wherein theprotox inhibitor is sulfentrazone.
 21. A herbicidal composition as setforth in claim 13, wherein the protox inhibitor is pyraflufen-ethyl. 22.A herbicidal composition as set forth in claim 13, wherein thecomposition contains water and/or an organic-based solvent forherbicidally active ingredients.
 23. A method of controlling undesiredvegetation when applied at a recommended application rate to the locusof the undesired vegetation, said method comprising: applying to thelocus of the undesired vegetation, a herbicidally effective amount of acomposition comprising as herbicidally active postemergent herbicidalingredients, quinclorac, a selective herbicidal protox inhibitor, and aselective auxinic herbicidal agent, the composition containing the agentand the inhibitor being applied at a rate sufficient to supply fromabout 0.1 to about 1 lb/acre of the quinclorac, from about 0.005 toabout 0.06 lb/acre of the protox inhibitor and from about 0.15 to about2 lbs/acre of the auxinic agent.
 24. The method of claim 23, wherein thecomposition is applied to the locus of the undesired vegetation at arate sufficient to supply from about 0.18 to about 0.75 lb/acre ofquinclorac.
 25. The method of claim 23, wherein the composition isapplied to the locus of the undesired vegetation at a rate sufficient tosupply about 0.375 lb/acre of quinclorac.
 26. The method of claim 23,wherein the composition is applied to the locus of the undesiredvegetation at a rate sufficient to supply from about 0.01 to about 0.05lb/acre of the protox inhibitor.
 27. The method of claim 23, wherein thecomposition is applied to the locus of the undesired vegetation at arate sufficient to supply from about 0.02 to about 0.03 lb/acre of theprotox inhibitor.
 28. The method of claim 23, wherein the composition isapplied to the locus of the undesired vegetation at a rate sufficient tosupply from about 0.25 to about 1.5 lb/acre of the auxinic agent. 29.The method of claim 23, wherein the composition is applied to the locusof the undesired vegetation at a rate sufficient to supply about 0.75lb/acre of said auxinic agent.
 30. The method of claim 23, wherein theprotox inhibitor is selected from the group consisting ofcarfentrazone-ethyl, sulfentrazone, pyraflufen-ethyl, flumioxazin,fluthiacet-methyl and oxyfluorfen.
 31. The method of claim 23, whereinthe protox inhibitor applied to the locus of the undesired vegetation iscarfentrazone-ethyl.
 32. The method of claim 23, wherein protoxinhibitor applied to the locus of the undesired vegetation issulfentrazone.
 33. The method of claim 23, wherein protox inhibitorapplied to the locus of the undesired vegetation is pyraflufen-ethyl.34. The method of claim 23, wherein the auxinic herbicidal agent appliedto the locus of the undesired vegetation is selected from the groupconsisting of herbicidally active phenoxy, benzoic, pyridine,quinolinecarboxylic acid compounds, other than quinclorac, and estersand amine and inorganic salts thereof.
 35. A method of controllingundesired vegetation, said method comprising: applying to the locus ofthe vegetation, a herbicidally effective amount of a compositioncomprising as herbicidally active ingredients, quinclorac herbicide anda selective herbicidal protox inhibitor, the composition containing theagent and the inhibitor being applied at a rate sufficient to supplyfrom about 0.1 to about 1 lb/acre of the quinclorac and from about 0.005to about 0.06 lb/acre of the protox inhibitor.
 36. The method of claim35, wherein the composition is applied to the locus of the undesiredvegetation at a rate sufficient to supply from about 0.18 to about 0.75lb/acre of said quinclorac.
 37. The method of claim 35, wherein thecomposition is applied to the locus of the undesired vegetation at arate sufficient to supply about 0.375 lb/acre of said quinclorac. 38.The method of claim 35, wherein the composition is applied to the locusof the undesired vegetation at a rate sufficient to supply from about0.01 to about 0.03 lb/acre of the protox inhibitor.
 39. The method ofclaim 35, wherein the composition is applied to the locus of theundesired vegetation at a rate sufficient to supply from about 0.2 toabout 0.3 lb/acre of the protox inhibitor.
 40. The method of claim 35,wherein the protox inhibitor is selected from the group consisting ofcarfentrazone-ethyl, sulfentrazone, pyraflufen-ethyl, flumioxazin,fluthiacet-methyl and oxyfluorfen.
 41. The method of claim 35, whereinthe protox inhibitor applied to the locus of the undesired vegetation iscarfentrazone-ethyl.
 42. The method of claim 35, wherein protoxinhibitor applied to the locus of the undesired vegetation issulfentrazone.
 43. The method of claim 35, wherein protox inhibitorapplied to the locus of the vegetation is pyraflufen-ethyl.
 44. Aselective synergistic postemergent herbicidal composition for thecontrol of undesired vegetation when applied to the locus of theundesired vegetation, said composition comprising: herbicidallyeffective amounts of the synergistic combination of quinclorac, aherbicidal protox inhibitor, and a herbicidal auxinic compound.
 45. Aherbicidal composition as set forth in claim 44, wherein the protoxinhibitor is selected from the group consisting of carfentrazone-ethyl,sulfentrazone, pyraflufen-ethyl, flumioxazin, fluthiacet-methyl andoxyfluorfen.
 46. A herbicidal composition as set forth in claim 44,wherein the protox inhibitor is carfentrazone-ethyl.
 47. A herbicidalcomposition as set forth in claim 44, wherein the protox inhibitor issulfentrazone.
 48. A herbicidal composition as set forth in claim 44,wherein the protox inhibitor is pyraflufen-ethyl.
 49. A herbicidalcomposition as set forth in claim 44, wherein the auxinic herbicidalcompound is selected from the group consisting of herbicidally activephenoxy, benzoic, pyridine, quinolinecarboxylic acid compounds, otherthan quinclorac, and ester and amine and inorganic salts thereof.
 50. Aselective synergistic postemergent herbicidal composition for thecontrol of undesired vegetation when applied to the locus of thevegetation, said composition comprising: herbicidally effective amountsof the synergistic combination of quinclorac and a herbicidal protoxinhibitor.
 51. A herbicidal composition as set forth in claim 50,wherein the protox inhibitor is carfentrazone-ethyl.
 52. A herbicidalcomposition as set forth in claim 50, wherein the protox inhibitor issulfentrazone.
 53. A herbicidal composition as set forth in claim 50,wherein the protox inhibitor is pyraflufen-ethyl.
 54. A selectivesynergistic postemergent herbicidal composition for the control ofundesired vegetation when applied at a recommended application rate tothe locus of the undesired vegetation, said composition comprising asherbicidally active ingredients: quinclorac herbicide; and a selectiveherbicidal protox inhibitor; said composition containing about 0.05 partto about 0.1 part by weight of protox inhibitor for each part by weightof quinclorac.
 55. A herbicidal composition as set forth in claim 54,wherein is provided about 0.08 part by weight of protox inhibitor foreach part by weight of quinclorac.
 56. A selective synergisticpostemergent herbicidal composition for the control of undesiredvegetation when applied at a recommended application rate to the locusof the undesired vegetation, said composition comprising as herbicidallyactive ingredients: quinclorac herbicide; a selective herbicidal protoxinhibitor; and a selective herbicidal auxinic agent, said compositioncontaining about 0.05 part to about 0.1 part by weight of protoxinhibitor for each part by weight of quinclorac, and about 1 to 4 partsby weight of auxinic agent for each part by weight of quinclorac.
 57. Aherbicidal composition as set forth in claim 56, wherein is providedabout 0.08 part by weight of protox inhibitor for each part by weight ofquinclorac.
 58. A herbicidal composition as set forth in claim 56,wherein is provided about 2 parts by weight of auxinic agent for eachpart by weight of quinclorac.